EP 1758109 A1 20070228 - Optical information recording medium
Title (en)
Optical information recording medium
Title (de)
Optisches Informationsaufzeichnungsmedium
Title (fr)
Support d'enregistrement d'informations optique
Publication
Application
Priority
- EP 02250766 A 20020205
- JP 2001034734 A 20010209
Abstract (en)
A phase-change optical information recording medium in which information can be recorded, reproduced and rewritten and which includes a first transparent substrate (1) having a wobbling guide groove which is spirally formed thereon at a pitch; a first dielectric layer (2) located overlying the first transparent substrate (1) and having an optical thickness of from 80 nm to 200 nm; a phase-change recording layer (3) located overlying the first dielectric layer (2) and having an optical thickness of from 20 to 50 nm when the recording layer (3) is in an erased state; a second dielectric layer (4) located overlying the recording layer (3) and having an optical thickness of from 10 nm to 70 nm; a reflection layer (5) located overlying the second dielectric layer (4); optionally a third dielectric layer (4') located between the second dielectric layer (4) and the reflection layer (5); and a second transparent substrate (1') located overlying the reflection layer (5).
IPC 8 full level
B41M 5/26 (2006.01); B32B 3/02 (2006.01); G11B 7/007 (2006.01); G11B 7/24 (2013.01); G11B 7/24027 (2013.01); G11B 7/2403 (2013.01); G11B 7/24035 (2013.01); G11B 7/24047 (2013.01); G11B 7/2405 (2013.01); G11B 7/24079 (2013.01); G11B 7/24082 (2013.01); G11B 7/243 (2013.01); G11B 7/2433 (2013.01); G11B 7/253 (2013.01); G11B 7/2534 (2013.01); G11B 7/257 (2013.01); G11B 7/26 (2006.01)
CPC (source: EP US)
G11B 7/2403 (2013.01 - EP US); G11B 7/24035 (2013.01 - EP US); G11B 7/24067 (2013.01 - EP US); G11B 7/243 (2013.01 - EP US); G11B 7/253 (2013.01 - EP US); G11B 7/256 (2013.01 - EP US); G11B 7/257 (2013.01 - EP US); G11B 7/24079 (2013.01 - EP US); G11B 7/24082 (2013.01 - EP US); G11B 7/2534 (2013.01 - EP US); G11B 7/258 (2013.01 - EP US); G11B 7/259 (2013.01 - EP US); G11B 2007/24308 (2013.01 - EP US); G11B 2007/2431 (2013.01 - EP US); G11B 2007/24312 (2013.01 - EP US); G11B 2007/24314 (2013.01 - EP US); G11B 2007/24316 (2013.01 - EP US); Y10T 428/21 (2015.01 - EP US); Y10T 428/215 (2015.01 - EP US)
Citation (search report)
- [XA] US 6177167 B1 20010123 - YUZURIHARA HAJIME [JP], et al
- [A] EP 0867868 A2 19980930 - MITSUBISHI CHEM CORP [JP]
- [A] EP 1065659 A2 20010103 - PIONEER CORP [JP]
- [A] EP 0898272 A2 19990224 - RICOH KK [JP]
- [A] US 6127016 A 20001003 - YAMADA KATSUYUKI [JP], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1231604 A2 20020814; EP 1231604 A3 20050302; EP 1231604 B1 20070110; DE 60217425 D1 20070222; DE 60217425 T2 20071025; DE 60230343 D1 20090122; DE 60233275 D1 20090917; EP 1758109 A1 20070228; EP 1758109 B1 20081210; EP 1760706 A1 20070307; EP 1760706 B1 20090805; JP 2002237096 A 20020823; TW I221611 B 20041001; US 2002155248 A1 20021024; US 2004190436 A1 20040930; US 2006126486 A1 20060615; US 2006136957 A1 20060622; US 6827999 B2 20041207; US 7042831 B2 20060509; US 7411887 B2 20080812; US 7414954 B2 20080819
DOCDB simple family (application)
EP 02250766 A 20020205; DE 60217425 T 20020205; DE 60230343 T 20020205; DE 60233275 T 20020205; EP 06025000 A 20020205; EP 06025001 A 20020205; JP 2001034734 A 20010209; TW 91101550 A 20020130; US 35046906 A 20060208; US 35058506 A 20060208; US 7106802 A 20020207; US 82032104 A 20040408